July 2004

[Image: Apparently, "space-based maps of buildings and paved surfaces, such as roads and parking lots, which are impervious to water, can indicate where large amounts of storm water runs off." In other words, these new cartographic tools can be used to predict where urban flash floods might flow – hydrology at a distance. The map you're looking at, above, shows the Baltimore-Washington metropolitan area (in false-color). Here's a massive 4.2MB version. Courtesy NASA/Earth Observatory].

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BLDGBLOG ("building blog") is written by Geoff Manaugh. The opinions expressed here are my own; they do not reflect the views of my friends, editors, employers, publishers, or colleagues, with whom this blog is not affiliated. More.